Question Detail
Question
Morula is a developmental stage: a. between the zygote and blastocyst b. between the blastocyst and gastrula c. between implantation and parturition d. after the implantation
Correct Answer
Option A is the correct answer.
Detailed Explanation
The morula is an early stage of embryonic development consisting of a solid ball of cells (like a mulberry). It forms after several rounds of cleavage from the zygote and comes before the formation of the hollow, fluid-filled blastocyst (in mammals).
Hint
It's the solid ball stage between the single cell and the hollow ball.